Some help with Bltoutch

Hello, i just got a BlTouch and i have tried to look at the guied but i just cant get it to work.
first thing, is the Bltoutch suposed to replace the Z-limit switch all togethere ? i dont know if i like it if its suposed to. these are my settings, if anyone have some time over just to see what is wrong i whold be realy happy i have a DuetWifi2 that i got maby 4 month ago, and i am using the pins as shown in the guide

my BlToutch in mounted on the hotend fan, might not be the best place but the only place i can right now.

sadly no, the prob is just sitting there red and inside, it wont drop, it started to go down and wanted to probe but that is not a good idea if the prob hasent droped so i had to turn it of so it dosent destroy my bed

And you're certain you're using heater pin 3 as the servo control pin?
And you're certain you have the heater pin 3 unbound as a heater in config.g?
And you're certain you have no commands for heater pin 3 in config-override.g?